The use of Value Theory. Presentation to NorthWest University, China2021-10-202022-11-12https://movingfinger.org/wp-content/uploads/2022/03/output-onlinegiftools-2.gifMoving Fingerhttps://movingfinger.org/wp-content/uploads/2022/03/output-onlinegiftools-2.gif200px200px